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我目前正在尝试使用Scrapey在python中创建一个简单的爬虫程序。我想要它做的是读取链接列表并保存它们链接到的网站的html。现在,我可以获取所有网址,但我无法弄清楚如何下载网页。这里是我的蜘蛛到目前为止的代码:用scrapy创建一个简单的python爬虫程序
from scrapy.spider import BaseSpider
from scrapy.selector import HtmlXPathSelector
from tutorial.items import BookItem
# Book scrappy spider
class DmozSpider(BaseSpider):
name = "book"
allowed_domains = ["learnpythonthehardway.org"]
start_urls = [
"http://www.learnpythonthehardway.org/book/",
]
def parse(self, response):
filename = response.url.split("/")[-2]
file = open(filename,'wb')
file.write(response.body)
file.close()
hxs = HtmlXPathSelector(response)
sites = hxs.select('//ul/li')
items = []
for site in sites:
item = BookItem()
item['title'] = site.select('a/text()').extract()
item['link'] = site.select('a/@href').extract()
items.append(item)
return items